Date: Thu, 2 Feb 2023 07:39:35 GMT From: Navdeep Parhar <np@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 35c9bbff4342 - stable/13 - cxgbe(4): Add a knob to request that clocks be gated on suspend. Message-ID: <202302020739.3127dZap062105@gitrepo.freebsd.org>
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The branch stable/13 has been updated by np: URL: https://cgit.FreeBSD.org/src/commit/?id=35c9bbff43423f4d8b0920ef1eb1d79975b9776e commit 35c9bbff43423f4d8b0920ef1eb1d79975b9776e Author: Navdeep Parhar <np@FreeBSD.org> AuthorDate: 2022-08-16 07:48:21 +0000 Commit: Navdeep Parhar <np@FreeBSD.org> CommitDate: 2023-02-02 07:16:20 +0000 cxgbe(4): Add a knob to request that clocks be gated on suspend. Sponsored by: Chelsio Communications (cherry picked from commit a8dc67388ae11a3bbb0175acb3ef9f6478d0c233) --- sys/dev/cxgbe/t4_main.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/sys/dev/cxgbe/t4_main.c b/sys/dev/cxgbe/t4_main.c index ebbe1bf1306e..9f4ffba9b3ef 100644 --- a/sys/dev/cxgbe/t4_main.c +++ b/sys/dev/cxgbe/t4_main.c @@ -631,6 +631,10 @@ static int t4_reset_on_fatal_err = 0; SYSCTL_INT(_hw_cxgbe, OID_AUTO, reset_on_fatal_err, CTLFLAG_RWTUN, &t4_reset_on_fatal_err, 0, "reset adapter on fatal errors"); +static int t4_clock_gate_on_suspend = 0; +SYSCTL_INT(_hw_cxgbe, OID_AUTO, clock_gate_on_suspend, CTLFLAG_RWTUN, + &t4_clock_gate_on_suspend, 0, "gate the clock on suspend"); + static int t4_tx_vm_wr = 0; SYSCTL_INT(_hw_cxgbe, OID_AUTO, tx_vm_wr, CTLFLAG_RWTUN, &t4_tx_vm_wr, 0, "Use VM work requests to transmit packets."); @@ -2074,6 +2078,12 @@ t4_suspend(device_t dev) sc->reset_thread = NULL; mtx_unlock(&sc->reg_lock); + if (t4_clock_gate_on_suspend) { + t4_set_reg_field(sc, A_PMU_PART_CG_PWRMODE, F_MA_PART_CGEN | + F_LE_PART_CGEN | F_EDC1_PART_CGEN | F_EDC0_PART_CGEN | + F_TP_PART_CGEN | F_PDP_PART_CGEN | F_SGE_PART_CGEN, 0); + } + CH_ALERT(sc, "suspend completed.\n"); done: end_synchronized_op(sc, 0);
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